A271775 - cp's OEIS frontend

A271775 Number of ordered ways to write n as x^2 + y^2 + z^2 + w^2 (x >= y >= z <= w) with x - y a square, where w,x,y,z are nonnegative integers.

n	a(n)
0	1
1	2
2	2
3	1
4	2
5	2
6	3
7	2
8	1
9	4
10	3
11	1
12	2
13	2
14	3
15	2
16	3
17	5
18	5
19	3
20	2
21	3
22	4
23	3
24	1
25	4
26	6
27	5
28	4
29	3
30	5
31	3
32	2
33	5
34	4
35	3
36	5
37	4
38	5
39	2
40	2
41	8
42	9
43	5
44	4
45	8
46	2
47	1
48	3
49	5
50	9
51	7
52	6
53	2
54	7
55	4
56	1
57	5
58	6
59	6
60	4
61	5
62	7
63	8
64	2
65	6
66	12
67	7
68	5
69	4
70	7

[1, 2, 2, 1, 2, 2, 3, 2, 1, 4, 3, 1, 2, 2, 3, 2, 3, 5, 5, 3, 2, 3, 4, 3, 1, 4, 6, 5, 4, 3, 5, 3, 2, 5, 4, 3, 5, 4, 5, 2, 2, 8, 9, 5, 4, 8, 2, 1, 3, 5, 9, 7, 6, 2, 7, 4, 1, 5, 6, 6, 4, 5, 7, 8, 2, 6, 12, 7, 5, 4, 7]

cp's OEIS Frontend

A271775 Number of ordered ways to write n as x^2 + y^2 + z^2 + w^2 (x >= y >= z <= w) with x - y a square, where w,x,y,z are nonnegative integers.

Table of values

List of values

n	a(n)
0	1
1	2
2	2
3	1
4	2
5	2
6	3
7	2
8	1
9	4
10	3
11	1
12	2
13	2
14	3
15	2
16	3
17	5
18	5
19	3
20	2
21	3
22	4
23	3
24	1
25	4
26	6
27	5
28	4
29	3
30	5
31	3
32	2
33	5
34	4
35	3
36	5
37	4
38	5
39	2
40	2
41	8
42	9
43	5
44	4
45	8
46	2
47	1
48	3
49	5
50	9
51	7
52	6
53	2
54	7
55	4
56	1
57	5
58	6
59	6
60	4
61	5
62	7
63	8
64	2
65	6
66	12
67	7
68	5
69	4
70	7

n	a(n)
0	1
1	2
2	2
3	1
4	2
5	2
6	3
7	2
8	1
9	4
10	3
11	1
12	2
13	2
14	3
15	2
16	3
17	5
18	5
19	3
20	2
21	3
22	4
23	3
24	1
25	4
26	6
27	5
28	4
29	3
30	5
31	3
32	2
33	5
34	4
35	3
36	5
37	4
38	5
39	2
40	2
41	8
42	9
43	5
44	4
45	8
46	2
47	1
48	3
49	5
50	9
51	7
52	6
53	2
54	7
55	4
56	1
57	5
58	6
59	6
60	4
61	5
62	7
63	8
64	2
65	6
66	12
67	7
68	5
69	4
70	7

n	a(n)
0	1
1	2
2	2
3	1
4	2
5	2
6	3
7	2
8	1
9	4
10	3
11	1
12	2
13	2
14	3
15	2
16	3
17	5
18	5
19	3
20	2
21	3
22	4
23	3
24	1
25	4
26	6
27	5
28	4
29	3
30	5
31	3
32	2
33	5
34	4
35	3
36	5
37	4
38	5
39	2
40	2
41	8
42	9
43	5
44	4
45	8
46	2
47	1
48	3
49	5
50	9
51	7
52	6
53	2
54	7
55	4
56	1
57	5
58	6
59	6
60	4
61	5
62	7
63	8
64	2
65	6
66	12
67	7
68	5
69	4
70	7